The present invention discloses a method, a system and apparatus of realizing indicating resource of MBS. The method comprises: a Down Link-MAP (DL-MAP) message sent by a Base Station (BS) carries resource information associated Multicast and Broadcast Service (MBS); receiving the DL-MAP message sent by BS, Mobile station (MS) judges whether the service information associated with MBS comprised in this message is identical to that reserved by the MS itself, if yes, the MS determines the physical channel resource occupied by MBS according to the resource information which is associated with MBS and carried in this message. The present invention also discloses another method of realizing indicating resource of MBS. The present invention solves the problem that the prior art cannot directly perform resource indication upon multicast service. Through the scheme of the present invention, position of the physical channel resource occupied by the MBS-MAP message corresponding to multicast service can be determined, and various specific positioning measures are provided thereof.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for use in a multicast and broadcast service (MBS) system, comprising: transmitting by a base station (BS), resource information and service information associated with a multicast and broadcast service (MBS) zone to a mobile station, wherein: said resource information is carried in an MBS-MAP information element (MBS-MAP-IE) of a downlink channel MAP message (DL-MAP); said resource information identifies a physical channel resource occupied by a MBS-MAP message; and said resource information comprises an orthogonal frequency division multiple access (OFDMA) symbol offset, a subchannel offset, a power offset (Boosting), number of OFDMA symbols, number of subchannels occupied by the MBS-MAP message, and a modulation and coding mode (DIUC) of the MBS-MAP message.
2. The method according to claim 1 , wherein said service information comprises a multicast and broadcast service (MBS) zone identifier.
3. The method according to claim 2 , wherein said service information further comprises a multicast connection identifier (Multicast CID).
4. The method according to claim 2 , wherein the MBS-MAP-IE is shared by more than one Multicast connection identifier (CID) in the same MBS zone, and the MBS-MAP-IE does not include a Multicast CID field.
5. The method according to claim 1 , wherein said resource information uniquely defines a position of the physical channel resource occupied by the MBS-MAP message.
6. The method according to claim 1 , wherein said resource information defines a relative position of the physical channel resource occupied by the MBS-MAP message in the multicast and broadcast service (MBS) zone.
7. The method according to claim 6 , wherein the OFDMA symbol offset in the MBS-MAP-IE of the downlink channel map message (DL-MAP) is used for determining a starting position of the MBS zone.
8. The method according to claim 1 , wherein the mobile station (MS) receives the downlink channel MAP message (DL-MAP) sent by the base station (BS), judges whether the service information associated with the multicast and broadcast service (MBS) zone comprised in the MBS-MAP-IE is identical to that the mobile station (MS) expects to receive, if yes, the mobile station (MS) determines the physical channel resource occupied by the multicast and broadcast service (MBS)-MAP message utilizing the resource information.
9. A base station in a cellular telecommunications system for providing a multicast and broadcast service, wherein said base station is configured to transmit resource information and service information associated with a multicast and broadcast service (MBS) zone to a mobile station, said resource information is carried in an MBS-MAP information element (MBS-MAP-IE) of a downlink channel MAP message (DL-MAP) and identifies a physical channel resource occupied by a MBS-MAP message; and wherein the resource information comprises an orthogonal frequency division multiple access (OFDMA) symbol offset, a subchannel offset, a power offset (Boosting), number of OFDMA symbols and number of subchannels occupied by the MBS-MAP message, and a modulation and coding mode (DIUC) of the MBS-MAP message.
10. The base station according to claim 9 , wherein the service information comprises a multicast and broadcast service (MBS) zone identifier.
11. The base station according to claim 10 , wherein the service information further comprises a multicast connection identifier (Multicast CID).
12. The base station according to claim 10 , wherein the MBS-MAP-IE is shared by more than one Multicast connection identifier (CID) in the same MBS zone, and the MBS-MAP-IE does not include a Multicast CID field.
13. The base station according to claim 9 , wherein said resource information uniquely defines a position of the physical channel resource occupied by the MBS-MAP message.
14. The base station according to claim 9 , wherein said resource information defines a relative position of the physical channel resource occupied by the MBS-MAP message in the multicast and broadcast service (MBS) zone.
15. The base station according to claim 14 , wherein the OFDMA symbol offset in the MBS-MAP-IE of the downlink map message (DL-MAP) is used for determining a starting position of the MBS zone.
16. A base station in a cellular telecommunications network, comprising: (a) an input section, configured to receive data to be transmitted by the base station; (b) a processing section, configured to receive data from said input section and generate downlink frames, wherein at least some of the downlink frames include a traffic portion containing bursts of traffic data and a multicast/broadcast portion containing bursts of multicast/broadcast data, wherein (i) said multicast/broadcast portion further comprises a multicast/broadcast service map message identifying, for each respective one of said bursts of multicast/broadcast data, a modulation and coding mode used therein, and (ii) said traffic portion further comprises a downlink map message identifying, for each respective one of said bursts of traffic data, a modulation and coding mode used therein and identifying a position and a size of the multicast/broadcast service map message, and (c) a transmitter section, configured to transmit said downlink frames generated by said processing section.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
May 1, 2007
January 11, 2011
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